<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Barcode
 * @subpackage Object
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Identcode.php 23775 2011-03-01 17:25:24Z ralph $
 */

/**
 * @see Zend_Barcode_Object_Code25interleaved
 */
require_once 'Zend/Barcode/Object/Code25interleaved.php';

/**
 * @see Zend_Validate_Barcode
 */
require_once 'Zend/Validate/Barcode.php';

/**
 * Class for generate Identcode barcode
 *
 * @category   Zend
 * @package    Zend_Barcode
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Barcode_Object_Identcode extends Zend_Barcode_Object_Code25interleaved {
	
	/**
	 * Default options for Identcode barcode
	 * @return void
	 */
	protected function _getDefaultOptions() {
		$this->_barcodeLength = 12;
		$this->_mandatoryChecksum = true;
	}
	
	/**
	 * Retrieve text to display
	 * @return string
	 */
	public function getTextToDisplay() {
		return preg_replace ( '/([0-9]{2})([0-9]{3})([0-9]{3})([0-9]{3})([0-9])/', '$1.$2 $3.$4 $5', $this->getText () );
	}
	
	/**
	 * Check allowed characters
	 * @param string $value
	 * @return string
	 * @throw Zend_Barcode_Object_Exception
	 */
	public function validateText($value) {
		$this->_validateText ( $value, array ('validator' => $this->getType () ) );
	}
	
	/**
	 * Get barcode checksum
	 *
	 * @param  string $text
	 * @return int
	 */
	public function getChecksum($text) {
		$this->_checkText ( $text );
		$checksum = 0;
		
		for($i = strlen ( $text ); $i > 0; $i --) {
			$checksum += intval ( $text {$i - 1} ) * (($i % 2) ? 4 : 9);
		}
		
		$checksum = (10 - ($checksum % 10)) % 10;
		
		return $checksum;
	}
}
